Light Sectors; Magnetic Deviation - Interphase Chart Master Chart Master 11 CVS+ User Manual

Goto
It is the function that defines the destination point and activates the naviga-
tion to it. The destination can be placed on any location of the map, an existing
Mark point or on a pre-defined Route.
GPS = Global Positioning System
It is a satellite based navigation system operated by the US Department of
Defense. It gives the navigator a position 24 hours a day, 365 days a year
under any weather conditions.
GNSS = Global Navigation Satellite System
It is the name used to indicate any single or combined navigation system
based on satellites. The current available satellites systems are: GPS, GLO-
NASS and the combined GPS and GLONASS.
HDG = Heading
The horizontal direction in which a ship actually points or heads in any mo-
ment (see also COG).
HDOP = Horizontal Dilution Of Precision
It is a parameter indicating the precision of the positioning system (GPS). The
smaller HDOP value indicates higher position accurately.
Home mode
All operations refer to the ship's position.
Landmarks
Landmarks are any prominent object such as monument, building, silo, tower,
mast, ..., on land which can be used in determining a location or a direction.
Latitude
The angular distance North or South of the equator measured by lines encir-
cling the earth parallel to the equator in degrees from 0° to 90°.
LAT/LON
Coordinate system using Latitude and Longitude coordinates to define a posi-
tion on earth.

Light Sectors

It is possible to set On/Off the display of Light Sectors of all the Fixed Lights,
Buoys and lighthouses. When Lights are on, lights are shown on lighthouses
and other lights that rotate, a light sector is displayed to show the range of
coverage for the light.
LOG Speed
Speed of the vessel relative to the water, provided by an instrument with a sub-
merged transducer for measuring the distance/speed travelled by the vessel.
Longitude
The angular distance East or West of the prime meridian (Greenwich meridian)
as measured by lines perpendicular to the parallels and converging at the
poles from 0° to 180°.
Loran
It is a positioning system which determines the current position of the vessel
by measuring the difference in the times of reception of synchronized radio
pulse signals transmitted by two or more fixed stations.

Magnetic Deviation

The value, expressed in degrees East or West that indicates the direction in
which the north indicator on the compass card is offset from the magnetic
north (the difference expressed in degrees East or West between the compass
north and the magnetic north).
Magnetic Variation
The angle between the magnetic and geographic meridians at any place, ex-
pressed in degrees West or East to indicate the direction of magnetic North from
true North. It changes from point to point, and (at the same point) with time.
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